3917D Value Mobile GPS Antenna. The 3917D GPS antenna is a high performance value antenna with a wide voltage range, ideally suited to telematics platforms for use in vehicle-mounted applications. Using internal magnets or screw mount holes, the antenna can be installed almost anywhere on a vehicle allowing for greater fl exibility. The 3917D antenna features 28 dB gain low noise amplifi er and a SAW fi lter. With 2.7 to 5 volt operation, the antenna can be used with the vast majority of GPS systems available.